The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
In 48 records from GBIF, adults of this species have mostly been collected during August (44%), September (17%), October (13%), July (8%), June (8%), and May (6%).
In 41 records from GBIF, this species has been collected at elevations ranging from 10 to 10466 ft, with an average (median) of 8022 ft.
Time of day: Evening
Current speed: Fast
Environmental tolerance: Prefers clear water